Kyverno before 1.19.1 Namespace Isolation Bypass via Percent-Encoded Path
Kyverno before 1.19.1 contains a namespace isolation bypass in the apiCall context entry of namespaced Policy resources due to inconsistent path interpretation between validation and execution. A low-privilege tenant can use percent-encoded dot-segments in urlPath to bypass namespace checks and read resources from other namespaces using the Kyverno admission controller's ServiceAccount credentials.
CVE-2026-100707
Primary source · Revision 2
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-100707
kyverno
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "kyverno",
"product": "kyverno",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "1.19.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "1.19.1",
"versionType": "semver"
}
],
"packageURL": "pkg:golang/github.com/kyverno/kyverno",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-100707
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #59650 · Revision 2
- Added to Heist Feed
- Publisher date